Te Rekereke Stream at Ruapuke Road

Te Rekereke Stream ecological site at Ruapuke Road, Raglan. The stream runs through a predominately native forest catchment with its headwaters orginating at the top of Mount Karioi. The stream has good cover by native shrubs and mature species on its margins. The stream also has a good level of woody debris and is comprised of a hard cobble substrate.

Ecology

Ecological data for this site

Can I trust this data?

This dashboard shows the results from macroinvertebrate sampling at this site. It displays three ecological indicators: macroinvertebrate community index, taxonomic richness and percent EPT.

For sites where State is 'N/A' or Trend is 'Not Assessed', there are not enough data to calculate a State and/or Trend result. Click on an indicator to see the available historical data.

MCI

5 year median: {{medians.MciMedian}}

State

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Trend

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The Macroinvertebrate Community Index uses aquatic macroinvertebrates to assess the health of streams in New Zealand.

MCI sample history at this site

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MCI for Te Rekereke Stream at Ruapuke Road

MCI score

What do the icons mean?

EXCELLENT

MCI score of more than 119. Streams in excellent ecological condition. Indicative of excellent water quality and/or habitat conditions.

GOOD

MCI between 100 and 119. Streams in good ecological condition. Indicative of good water quality and/or habitat conditions.

FAIR

MCI between 80 and 99. Streams in fair ecological condition. Indicative of only fair water quality and/or habitat condition.

Taxonomic richness is the number of different taxa present in an ecological community identified to the best possible level.

Taxa richness history at this site

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Taxa richness for Te Rekereke Stream at Ruapuke Road

Number of taxa

Percent EPT richness

The median of the last 5 years of data

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EPT are macroinvertebrates that are sensitive to water pollution. These are Ephemeroptera (mayfly), Plecoptera (stonefly) and Trichoptera (caddisfly).

EPT history at this site

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Percent EPT richness for Te Rekereke Stream at Ruapuke Road

EPT %

Can I trust this data?

The Cawthron Institute has worked alongside regional councils to verify the processes and methods used for macroinvertebrate data collection, processing of the data in the laboratory, quality control in the field and laboratory and the statistical analysis and interpretation of the results presented.

Macroinvertebrates are sampled at this site as part of council's stream health monitoring programme, as recommended by proposed national guidelines.

Sampling - Frequency

Macroinvertebrate sampling is done annually or more frequently at this site as recommended by proposed national guidelines. Therefore, data shown here follow current best practice guidelines.

Sampling - Protocols

This site is a hard-bottomed site and appropriate sampling protocols have been applied. Data shown here have been collected using current best-practice.

Sampling - Habitat

Macroinvertebrate sampling is done in riffle habitat at this site. Data shown here are therefore following best practice.

Sampling - Stand-down period

This council does not collect any macroinvertebrate samples for up to two weeks after a flood greater than three times the median flow as recommended by proposed national guidelines. Therefore, data collected at this site is following best practice.

Processing - Protocol

Samples at this site have been processed following sampling potocols P2 or P3 and data have been processed following best practice.

Quality Control - Field

Data collected at this site had some form of field quality control done.

Quality Control - Lab

Data processed at this site has had one of the three Laboratory Quality Control Protocols (i.e., QC1, QC2,Q C3) applied. Data shown here is more robust than data with no laboratory QC applied.